Reaktion #11575

Reaktionsgleichung

sodium hydrogencarbonate

N-Methylmorpholine

isobutyl chlorocarbonate

Bromoacetic acid

2-(1-adamantyl)-N-pentylethylamine hydrochloride

→

2-bromoacetic acid N-[2-(1-adamantyl)ethyl]-N-pentylamide

Lösungsmittel

ethyl acetate

tetrahydrofuran

tetrahydrofuran

Reaktionsbedingungen

Aufarbeitung

1. 1
   workup.STIRRINGThe whole was stirred at 0° C. for 1.5 hours
2. 2
   WaschenThe ethyl acetate layer was washed with water (70 ml)
3. 3
   Trocknena saturated aqueous sodium chloride solution (70 ml) successively and dried over anhydrous magnesium sulfate
4. 4
   EinengenThe ethyl acetate layer was concentrated under reduced pressure

Vorschrift

Bromoacetic acid (0.50 g, 3.6 mmol) was dissolved in anhydrous tetrahydrofuran (20 ml), and the solution was stirred at −15° C. under a nitrogen atmosphere. N-Methylmorpholine (0.40 ml, 3.6 mmol) and isobutyl chlorocarbonate (0.45 ml, 3.5 mmol) were added to the solution. Then, a solution of a free base of 2-(1-adamantyl)-N-pentylethylamine hydrochloride (Intermediate No. 1-1) (1.0 g, 3.5 mmol) in anhydrous tetrahydrofuran (20 ml) was added dropwise to the mixture. The whole was stirred at 0° C. for 1.5 hours, a saturated aqueous sodium hydrogencarbonate solution (70 ml) and ethyl acetate (70 ml) were added to the reaction mixture, and the reaction mixture was distributed. The ethyl acetate layer was washed with water (70 ml) and a saturated aqueous sodium chloride solution (70 ml) successively and dried over anhydrous magnesium sulfate. The ethyl acetate layer was concentrated under reduced pressure to give 1.3 g (quantitatively) of 2-bromoacetic acid N-[2-(1-adamantyl)ethyl]-N-pentylamide as a oily matter.

Quelle